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I saw a similar question But the answers wasn't clear to me. Simply how did Cain and Abel have children?

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marked as duplicate by Caleb Apr 4 '14 at 14:43

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

See also Is incest a sin? – Caleb Apr 4 '14 at 14:44
up vote 5 down vote accepted

Genesis 5:4 "And the days of Adam after he had begotten Seth were eight hundred years: and he begat sons and daughters"

They had children by their sisters.

(Incest was not prohibited at the time since genetic decay had not set in yet)

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Now that explains missing part. But sisters !!! Thank for your time mister. – nidhinpd Apr 4 '14 at 10:53

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